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0.1x+8.7=9
We move all terms to the left:
0.1x+8.7-(9)=0
We add all the numbers together, and all the variables
0.1x-0.3=0
We move all terms containing x to the left, all other terms to the right
0.1x=0.3
x=0.3/0.1
x=2+0.1/0.1
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